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Durable solar mirror films

A specular reflective film and solar energy technology, which is applied in solar thermal energy, solar thermal power generation, solar collectors, etc., can solve the problem that the working temperature is not so high

Inactive Publication Date: 2015-02-04
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The principle of operation is very similar to a concentrated solar power unit, but due to the concentration of sunlight, the operating temperature is not as high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example

[0086] testing method

[0087] Neutral salt spray test

[0088] Except that the results are reported as % reflective area after various times in salt spray or simply as visually observed failures while in salt spray, according to ISO 9227:2006 "Corrosion tests in artificial atmospheres - Salt spray test ( Corrosion tests in artificial atmospheres--Salt spray tests)" to evaluate the corrosion of comparative examples and examples. Visual observation failure means the first visual indication of corrosion when the sample is in the salt spray.

[0089] reflective area percentage

[0090] The reflective area of ​​each sample was taken as the surface area of ​​the laminated sample that did not show any signs of discoloration due to corrosion or delamination. This area is then reported as a percentage of the original reflective surface area of ​​the sample. The initial reflection area of ​​the samples was taken as the full surface area of ​​the control samples and the area w...

example 1

[0097] A reflective mirror reflective film comprising a polymer layer and a metallized layer (under the trade designation "SOLAR MIRROR FILM SMF-1100 (solar mirror reflective film SMF-1100)" was obtained from 3M Company, St. Paul, Minnesota. , MN)) were laminated to an aluminum-coated substrate having a thickness of approximately 0.02 inches (0.05 cm) after removal of the pressure sensitive adhesive liner on the metallized side. The aluminum substrate was then cut into 10.2 cm x 10.2 cm (4 in x 4 in) samples using a shear cutter. Remove the pre-separation mask.

[0098] Ultrasonic energy was used to weld the reflective specularly reflective film along its edges as follows. The following ultrasonic welder was used: a frequency of 20 kHz, a power output of 4 kW, with a 3 inch (7.62 cm) cylinder (available from Emerson Industrial Automation, St. Louis, MO) "BRANSON model" 2000X"), a commercially available 1.5 gain titanium booster made by the Branson Company, and a titanium rod...

example 2

[0101] Weld samples were prepared as described in Example 1, except that a pressure of 280 kPa (40 lbf) was used. The samples were tested according to the above "Neutral Salt Spray Test" and the results are provided in Table 1.

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Abstract

The present disclosure generally relates to durable solar mirror films, methods of making durable solar mirror films, and constructions including durable solar mirror films. Some embodiments of the present disclosure relate to methods of making solar mirror films that do not include a reflective layer material across the entire weatherable layer. Some embodiments relate to a method of making a solar mirror film involving providing a weatherable layer (220) having a first major surface and a second major surface; depositing a reflective material (240) on the first major surface of the weatherable layer; and removing ultrasonically or thermally a portion (230a - 230d) of the reflective material (240).

Description

[0001] Government License Rights [0002] The United States Government has rights in at least some of the inventions described in this patent application pursuant to DE-AC36-08GO28308 (CRADA No. 08-316) issued by the United States Department of Energy. technical field [0003] The present disclosure generally relates to durable solar specular films, methods of making durable solar specular films, and constructions that include durable solar specular films. Background technique [0004] Renewable energy is energy derived from renewable natural resources such as sunlight, wind, rain, tides, and geothermal heat. As technology advances and the global population grows, the demand for renewable energy has increased dramatically. Although fossil fuels provide the vast majority of energy consumption today, these fuels are non-renewable. The global dependence on these fossil fuels has raised concerns not only about their consumption, but also about the environmental concerns assoc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B38/00F24S23/70
CPCB32B38/105B32B2457/12B32B2310/028F24S23/82Y02E10/40Y02E10/52B32B3/02B32B7/02B32B7/12B32B15/08B32B33/00G02B5/08H01L31/042C23F4/00H01L31/18H01L31/0547
Inventor A·莫尔纳A·J·亨德森J·H·伊顿R·吉利森D·T·陈M·B·奥尼尔
Owner 3M INNOVATIVE PROPERTIES CO
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